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    TECHNIQUES FOR PERFORMING A SAFETY TEST OF A LASER DIODE OPHTHALMIC SURGICAL APPARATUS
    21.
    发明公开
    TECHNIQUES FOR PERFORMING A SAFETY TEST OF A LASER DIODE OPHTHALMIC SURGICAL APPARATUS 审中-公开

    公开(公告)号：US20230414413A1

    公开(公告)日：2023-12-28

    申请号：US18329929

    申请日：2023-06-06

    Applicant: Alcon Inc.

    Inventor： Ronald T. Smith ,  Alireza Mirsepassi ,  Neda Dadashzadeh ,  Yuchao Liu ,  Conrad Sawicz

    IPC: A61F9/008 ,  A61B3/10

    CPC classification number: A61F9/00823 ,  A61F9/00825 ,  A61B3/1015

    Abstract: Aspects of the present disclosure provide techniques for performing a safety test of a laser diode associated with an ophthalmic surgical apparatus. An example method determining a measured slope efficiency of the laser diode based on a plurality of different current levels applied to an input of the laser diode and a plurality of different output power levels associated with the laser diode, determining an expected slope efficiency of the laser diode based on a measured operating temperature of the ophthalmic surgical apparatus, determining a result of the safety test of the laser diode based on the measured slope efficiency of the laser diode and the expected slope efficiency for the laser diode, and outputting an electrical signal indicating a result of the safety test of the laser diode.

    METHOD OF MAKING DIVERGING-LIGHT FIBER OPTICS ILLUMINATION DELIVERY SYSTEM
    24.
    发明申请
    METHOD OF MAKING DIVERGING-LIGHT FIBER OPTICS ILLUMINATION DELIVERY SYSTEM 有权

    公开(公告)号：US20230085961A1

    公开(公告)日：2023-03-23

    申请号：US18052295

    申请日：2022-11-03

    Applicant: Alcon Inc.

    Inventor： Alireza Mirsepassi ,  Ronald T. Smith ,  Michael J. Papac ,  Chenguang Diao

    IPC: A61B90/30 ,  G02B6/24 ,  G02B6/26 ,  A61B90/00 ,  A61F9/007 ,  G02B5/02 ,  F21V8/00

    Abstract: A process of making a diverging-light fiber optics illumination delivery system includes providing a micro-post comprising a glass-ceramic light-scattering element that includes at least one of a ceramic, a glass ceramic, an immiscible glass, a porous glass, opal glass, amorphous glass, an aerated glass, and a nanostructured glass; and fusion-splicing the glass-ceramic micro-post to the optical fiber by pulling an arc between electrodes across a gap formed by the optical fiber and the glass-ceramic micro-post; maintaining the arc for a time sufficiently long to make facing surfaces of the optical fiber and the micro-post one of malleable and molten; and pushing and thereby fusing together the facing surfaces of the optical fiber and the micro-post. Some embodiments can include fusing the glass-ceramic micro-post to the optical fiber by applying a laser beam to heat up at least one of the facing surfaces of the optical fiber and the glass-ceramic micro-post.

    Aligning multi-wavelength laser beams with cores of a multi-core fiber
    25.
    发明授权
    Aligning multi-wavelength laser beams with cores of a multi-core fiber 有权

    公开(公告)号：US11432963B2

    公开(公告)日：2022-09-06

    申请号：US16884262

    申请日：2020-05-27

    Applicant: Alcon Inc.

    Inventor： Bruno Lassalas ,  Mark Harrison Farley ,  Alireza Mirsepassi ,  Ronald T. Smith

    IPC: A61F9/008 ,  A61B18/22 ,  A61B18/20

    Abstract: Particular embodiments disclosed herein provide a surgical laser system comprising first laser source configured to emit a first laser beam with a first wavelength and a second laser source configured to emit a second laser beam with a second wavelength. The surgical laser system further comprises a first diffraction optical element (DOE) tuned to the first wavelength and a second DOE tuned to the second wavelength, wherein the first DOE is configured to diffract the first laser beam into one or more first diffracted beams at a diffraction angle and the second DOE is configured to diffract the second laser beam into one or more second diffracted beams at the same diffraction angle. The surgical laser system further comprises one or more beam splitters configured to reflect the one or more first diffracted beams and the one or more second diffracted beams onto a lens.

    BEAM DELIVERY SYSTEM FOR PROBE WITH MULTI-CORE FIBER
    27.
    发明申请
    BEAM DELIVERY SYSTEM FOR PROBE WITH MULTI-CORE FIBER 有权

    公开(公告)号：US20250028180A1

    公开(公告)日：2025-01-23

    申请号：US18760157

    申请日：2024-07-01

    Applicant: Alcon Inc.

    Inventor： Alireza Mirsepassi ,  Mark Harrison Farley ,  Ronald T. Smith

    IPC: G02B27/09

    Abstract: A beam delivery system for a probe includes a plurality of laser sources configured to generate a respective incident beam, including a first laser source generating a first incident beam and a second laser source generating a second incident beam. The system includes routing structures respectively positioned along a path of the respective incident beam. An optical subsystem is adapted to sequentially direct a respective output beam from the routing structures into each core of a multi-core fiber in communication with the probe. The first routing structure and the second routing structure respectively include an array of optical elements adapted to be synchronously moved such that the first incident beam and the second incident beam encounter an identical member of the array at a same time.

    SINGLE FIBER ILLUMINATED LASER PROBE WITH HIGH-ANGLE ILLUMINATION OUTPUT
    29.
    发明申请
    SINGLE FIBER ILLUMINATED LASER PROBE WITH HIGH-ANGLE ILLUMINATION OUTPUT 有权

    公开(公告)号：US20220268990A1

    公开(公告)日：2022-08-25

    申请号：US17651447

    申请日：2022-02-17

    Applicant: Alcon Inc.

    Inventor： Chenguang Diao ,  Ronald T. Smith ,  Alireza Mirsepassi

    IPC: G02B6/02 ,  A61F9/008

    Abstract: The present disclosure relates to a fiber and a laser probe assembly with a probe tip that houses the fiber. In certain aspects, the fiber includes a core, an outer cladding surrounding the core, and an end face at a proximal and/or distal end of the fiber. The core is configured to transmit a laser light beam while the core and the outer cladding are both configured to transmit an illumination light. In certain aspects, a surface area of the end face corresponding to a cross-section of at least the outer cladding is treated with a roughening or polishing process to modulate an illumination light output angle of the fiber. Using a fiber that is configured to transmit a laser light beam as well as a wide-angle illumination light allows for a more compact fiber and probe tip, allowing for medical procedures that require a narrower probe.

    Illuminating ophthalmic endoprobe
    30.
    发明授权
    Illuminating ophthalmic endoprobe 有权

    公开(公告)号：US11191606B2

    公开(公告)日：2021-12-07

    申请号：US16378886

    申请日：2019-04-09

    Applicant: Alcon Inc.

    Inventor： Bruno Lassalas ,  Chenguang Diao ,  Alireza Mirsepassi ,  Kambiz Parto ,  Mark Harrison Farley

    IPC: A61B90/30 ,  A61F9/008 ,  A61B1/00 ,  A61B1/06 ,  A61B3/00 ,  A61B5/00

    Abstract: In certain embodiments, an illuminating endoprobe system includes one or more light sources, a housing, a vitreous visualization fiber, and a general illumination fiber. The light sources generate a visualization light and an illumination light. The housing receives the visualization and illumination light, and has a probe tip with a probe axis. The vitreous visualization fiber transmits the visualization light through the probe tip. The visualization light has a visualization axis and a visualization beam angle at the probe tip. The general illumination fiber transmits the illumination light through the probe tip. The illumination light has an illumination axis and an illumination beam angle at the probe tip. The illumination beam angle is greater than the visualization beam angle, and the illumination axis is at an offset angle relative to the visualization axis, where the offset angle greater than 5 degrees.

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